Source Filmmarker to Blender import
Every face in a mesh model can be assigned a different material. By face I am referring to the polygons of the mesh, not the characters face.

The model would appear to have one material for the skin and another for eyebrows and eyelashes. This probably allows choosing different eyebrow textures to get a variety of characters.

I expect both materials are meant to use an image texture to define the colour on the model. Either the images are missing or are not set to be used by the material.